The compressibility factor for a real gas at high pressure is .

Options

A. `1+ RT//pb`
B. 1
C. `1+ pb//RT`
D. `1-pb//RT`

Answer

C

Explanation

`(P+a/(V^(2))) (V-b)=RT`
at high pressure `a/(V^(2))` can be neglected
`PV - Pb = Rt`
`PV = RT +Pb`
`(PV)/(RT) = 1 + (Pb)/(RT)`
`Z = 1+ (Pb)/(RT) , " " Z gt 1 ` at high pressure .